I recently rebuilt the engine and carb in my '72 400. It starts up ok, but it just winds up to high rpms right away. I have tried adjusted both the air and fuel screws but the only thing that seems to work is holding the choke partially closed. Any suggestions?

I need a woodruff key for my '73 400. Its got a 30mm crank. I also need some good suspension springs as several of mine are broken. I also need a clutch for the motor. And could someone tell where to get some points? thanks

the engine is metric but they didnt not start making metric woodruff keys and other certain things till the mid eighties so its some odd ball sae size. at least this is what i have found talking to machinists here locally.

I am rebuilding the motor in a 1973 400 with the KEC-340 engine and i cannot find a flywheel woodruff key that works, does anyone know the actual dimensions of it or does someone have an extra?

Yeah, i bought those and they are too small

I need a piston ring because im stupid and broke one putting the piston pin in. The piston # is AM53056 and I need a ring that will fit it.

I have a 1995 polaris xlt with the standard suspension, I bought an xtra 12 suspension to put on it and i was wondering if anybody could tell me the measurements of where the rear shaft bolt hole goes in the tunnel.

I'm trying to get this 400 restored and I keep running in to things that I am unsure about. First off, how do you get the inner side of the clutch off the crankshaft, and then after that how do you take apart the crankshaft to replace the inner seals. Secondly, the plastic bushings in the clutch spr...

I'm restoring a '73 400 and all my buddies say its a waste of time and money because its not worth anything. I think they're all full of it, but I am curious as to what it might be worth.

I was wondering how the speedometer cable is supposed to hook the the drive shaft on my 1973 400, the bearing was out when i got the sled so everything was torn up so im not sure how it is supposed to go.

I am rebuilding the motor in my 1973 400 and i need to find out things like the torque specs, point gap, and other pertinent information that i should be aware of. Any info would be helpful.

I was wondering what size of fuel line i should be using on my 1973 400, and also i was wondering where i can get a carb kit for the carb, its a WDA32

So i measured the pistons out of my KEC 340 today and they were 2.350 inches in diameter, i'm pretty sure they are wiseco pistons because they have a w cast into them. I still am trying to find another one to put in it. Also, i need some parts for the track, the first boogie wheel bar, with three wh...

I have a 1973 400, im trying to figure out which pistons i need to get for it. The engine has a plate on it that says KEC 340, but when i look the sled up on dennis kirk for the parts, i keep getting a KEC 400. I'm confused, can anyone help? Also while im on the topic of the engine, the carb is stam...